Dormer Pramet A110 10.20 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

The Dormer Pramet A110 10.20 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340 is engineered for serious metalworking where depth and precision matter. Designed to tackle demanding holes in a variety of materials, this drill blends a robust point geometry with durable construction to keep your projects moving forward without interruption.

Key features that drive performance

• 118° conventional point — a strong, self-centering tip that starts cleanly and holds its edge, making it easier to re-sharpen when needed and reducing wander on initial penetration.
• Steam oxide finish — a surface treatment that minimizes workpiece material from sticking to the cutting edge, promoting smoother chip evacuation and cleaner holes.
• Long length series — optimised for drilling deeper holes and applications where extra reach is essential, increasing versatility in crowded assemblies or through-holes.
• Premium HSS material — high-speed steel combines strength, toughness, and heat resistance, suitable for drilling a wide range of metals including steel, aluminium, and stainless steel.
• Straight shank, DIN 340 — a reliable, universal shank design that fits a broad spectrum of drill chucks and machine setups, delivering consistent grip and runout for precise results.
• Versatile application — appropriate for both hand-held drilling and machine-based operations, offering dependable performance in fabrication, maintenance, and DIY metalworking tasks.

Ideal use cases

• Deep-hole drilling in steel fixtures, brackets, and housings where standard-length drills fall short.
• Through-holes and blind holes in aluminium components where clean entry and steady chip flow are crucial.
• Prototyping and production environments that require a single drill to perform across multiple machines and setups.
• Maintenance tasks in workshops and light fabrication shops that demand reliable, consistent results with minimal regrind downtime.

Why this drill stands out

What sets the A110 apart is its combination of a robust tip geometry, durable HSS material, and a long-reach design all housed in a standard DIN 340 shank. This means fewer tool changes, higher reliability during through-hole work, and longer usable life from re-sharpening without sacrificing performance. When you’re chasing accuracy in deeper holes or working with materials that heat quickly, this drill maintains a true cutting edge and predictable hole diameter, reducing the need for finishes or reworks.

Practical tips for best results

• Pair with appropriate cutting fluid or coolant to extend tool life and improve chip evacuation, especially in stainless steel and other heat-sensitive materials.
• Start with a light, steady feed to establish a clean pilot hole, then progressively increase depth and feed rate as the bit bites deeper.
• Maintain sharpness through controlled regrinding when the cutting edge begins to dull; the 118° point is designed to regrind cleanly and repeatedly.
• Choose speeds and feeds that match both the material and the drill diameter to minimize heat buildup and maximize hole quality.

With the Dormer Pramet A110, you get a proven long-series drill that combines depth capability, versatile material compatibility, and reliable performance in a single, durable tool. It’s a go-to choice for professionals who value precision, efficiency, and consistency across hand-held and machine drilling tasks.